Home / 2,911.22-4,366.87-1,620.89

Finding the Fourth Proportional to 2,911.22, 4,366.87 and 1,620.89

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Solution

The fourth proportional to 2,911.22, 4,366.87 and 1,620.89 is: 2,431.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,911.22 : 4,366.87 = 1,620.89 : x
  2. Step 2: Convert to fraction form
    2,911.22/4,366.87 = 1,620.89/x
  3. Step 3: Cross multiply
    2,911.22x = 4,366.87 × 1,620.89
  4. Step 4: Simplify right side
    2,911.22x = 7,078,190.03
  5. Step 5: Solve for x
    x = 7,078,190.03/2,911.22
  6. Step 6: Final answer
    x = 2,431.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.